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Old 07-14-2013, 01:59 PM
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I bought the heads for $300 / pr. It looks like there are fairly new stainless valves installed along with dual springs. I had looked up some reman ATK heads, and they charge $150.00 core deposit... So worst case scenario is that I have just bought some cores to trade in.

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Old 07-15-2013, 05:29 AM
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Quote:
Originally Posted by BOBCRMAN@aol.com View Post
I read all three of the above sources. LOTS of incorrect information on them..

Example. 049 heads are also listed as 113cc. They are in actuality 120-122..
Another example. Stated in article that tall deck 427 trucks had 7/16" rod bolts. Completely false!

Plus many more. In this case don't believe what is printed..

Yes, I have actually cc'd many BBC heads and they are usually larger than GM stated spec.. I usually start with a .005" cut before measuring the chambers. A sloppy repair valve job can add cc's of volume to the chamber. Sink that valve/seat and add combustion chamber volume..
Sometimes the low-ball volumes are NHRA minimums- NOT what you see on an undecked head.

In any event, the published figures are ball park. ALL heads (both sides) have to be CC'd in order to know exactly what you have.
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